• 제목/요약/키워드: Composition rate of population

검색결과 97건 처리시간 0.028초

여성인구변동과 노동시장 (The Effects of Demographic Factors on the Change of Female Labor Market)

  • 장지연
    • 한국인구학
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    • 제21권2호
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    • pp.5-36
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    • 1998
  • 본 논문은 지난 30여년간 여성노동시장의 변화의 추이를 출산력 감소 등 인구학적 요인의 변화의 영향을 중심으로 살펴 보았다. 여성의 경제활동 참가율에 영향을 미칠 것으로 여겨지는 인구학적 요인들로는 교육, 혼인상태, 출산 등이 중요하다. 여성의 학력 수준이 평균적으로 높아지고, 결혼을 늦게 하는 추세이며, 자녀 수는 줄어드는 추세이다. 이러한 경향이 인구의 구성에 미치는 영향은 경제활동가능인구 중 고학력 여성의 비율이 증가하고 어린 자녀를 둔 여성의 비율은 줄었으며, 기혼 여성의 비율은 큰 변화가 없는 상황이다. 이러한 인구 구성의 변화가 여성의 경제활동참가율을 증가 시킨 것은 사실이다. 이에 더하여, 같은 인구학적 특성을 갖는 여성 집단의 노동력공급행태도 변화하였다. 고학력으로 분류할 수 있는 고졸, 대졸 여성의 경제활동참여율이 초졸, 중졸 여성의 참여율보다 빠르게 증가하였고, 혼인하여 배우자가 있는 여성의 경제활동참가율이 미혼여성의 그것보다 빨랐다. 출산이 경제활동참여를 억제하는 정도도 줄어든 것 같다. 즉, 지난 30년간 여성인구구성의 변화나 행위양식의 변화는 여성의 경제활동의 증가를 지원하는 방향으로 변하였다. 그러나 경기가 하강국면에 접어들 때, 여성은 더 먼저 노동시장 밖으로 밀려나는 경향이 있으며, 이 때 저연령, 저학력 등 인적자본이 열세인 여성, 그리고 여성노동자의 비율이 높은 산업, 직업에 속해 있는 여성이 더욱 취약한 것으로 보인다.

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아산호와 충주호의 삼각망에서 채집된 어류 종 조성 및 강준치 (Erythroculter erythropterus) 개체군의 전장-체중 관계 분석 (Species Composition of Fishes Collected by Fyke Net and Length-Weigth Relationships of Skygager (Erythroculter erythropterus) in Asan Lake and Chungju Lake)

  • 허민아;안희춘;박민수;양영준;이완옥
    • 한국어류학회지
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    • 제33권4호
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    • pp.287-296
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    • 2021
  • 아산호와 충주호에서 2021년 6~9월 사이에 삼각망에서 채집된 어류의 종 조성과 강준치(Erythroculter erythropterus) 개체군의 전장 - 체중 상관관계를 조사하였다. 조사기간 동안 아산호에서는 6과 13종 4,977개체, 충주호에서는 8과 18종 2,436개체가 채집되었다. 아산호의 우점종은 생체량 및 개체수에서 모두 강준치로 각각 498,424 g (84.5%), 4,470 (89.8%)이었으며, 충주호의 우점종 또한 강준치로, 생체량 301,818 g (77.5%), 개체수 1,327 (54.5%)이었다. 우점종인 강준치의 전장분포도 분석을 통해 연령구조를 추정하였으며, 아산호에서는 만 1~2년생의 출현비율이 높아 개체군의 성장 가능성이 크고, 충주호에서는 만 2년생 이상의 고 연령군의 출현이 대부분을 차지하여 비교적 개체군의 성장이 억제될 것으로 사료된다. 강준치 개체군의 전장-체중 상관관계를 분석한 결과, 아산호와 충주호에서의 b 값은 각각 3.06, 3.04, 비만도(K) 기울기 값은 각각 0.000128, 0.000051로 모두 양의 생육상태를 보였다. 조사시기별 비만도 기울기 값은, 6월이 가장 높았고 산란으로 인해 7월에는 낮아졌으며 9월까지도 영양 상태를 회복되지 못하고 음의 기울기가 나타났다.

동림저수지에서 월동조류 개체군의 시계열적 변화와 환경 요인 (Temporal variation of wintering bird population and environmental factors in Donglim reservoir)

  • 박종철;김우열
    • 한국습지학회지
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    • 제19권2호
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    • pp.223-229
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    • 2017
  • 본 연구는 동림저수지에서 지난 18년(1999~2016)동안 1월에 조사한 조류자료를 대상으로 시계열적 변화와 환경 요인과의 관계에 대해 분석하였다. 조사 자료는 '겨울철 조류 동시센서스'를 활용하였고, 연도별 개체군의 변화를 파악하기 위해 주성분 분석과 군집분석을 사용하였다. 환경 요인은 1월 평균 기온과 평균 저수율을 이용하였다. 연구 결과, 조류의 개체군 변화는 2개의 물새 그룹과 산새 그룹 1개의 증감으로 설명될 수 있다. 물새 그룹의 개체수가 증가하는 시기는 산새 그룹의 개체수가 증가하는 시기에 비해 월평균기온이 $1.4^{\circ}C$ 이상 높았다. 이에 비해 저수율의 영향은 분명하지 않았다. 기온의 영향을 받는 가창오리의 도래 여부는 나머지 하나의 물새 그룹과 산새 그룹에 모두 영향을 주는 요인이었다. 이 연구 결과는 기온 변화가 조류의 광역적인 공간 분포에 영향을 미치고, 가창오리와 같이 개체군이 큰 종 또는 무리의 이동은 조류의 지역적인 종구성과 개체수에 영향을 미친다는 것을 시사한다. 따라서 광역적인 규모에서의 환경 변화와 그에 따른 종 분포의 변화에 대한 이해는 지역적인 규모에서 조류 개체군의 시계열적 흐름을 이해하는데 도움을 준다.

Malaria Vector Surveillance in Ganghwa-do, a Malaria-Endemic Area in the Republic of Korea

  • Oh, Sung-Suck;Hur, Myung-Je;Joo, Gwang-Sig;Kim, Sung-Tae;Go, Jong-Myoung;Kim, Yong-Hee;Lee, Wook-Gyo;Shin, E-Hyun
    • Parasites, Hosts and Diseases
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    • 제48권1호
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    • pp.35-41
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    • 2010
  • We investigated the seasonality of Anopheles mosquitoes, including its species composition, density, parity, and population densities of mosquitoes infected with the parasite in Ganghwa-do (Island), a vivax malaria endemic area in the Republic of Korea. Mosquitoes were collected periodically with a dry-ice-tent trap and a blacklight trap during the mosquito season (April-October) in 2008. Anopheles sinensis (94.9%) was the most abundant species collected, followed by Anopheles belenrae (3.8%), Anopheles pullus (1.2%), and Anopheles lesteri (0.1%). Hibernating Anopheles mosquitoes were also collected from December 2007 to March 2008. An. pullus (72.1%) was the most frequently collected, followed by An. sinensis (18.4%) and An. belenrae (9.5%). The composition of Anopheles species differed between the mosquito season and hibernation seasons. The parous rate fluctuated from 0% to 92.9%, and the highest rate was recorded on 10 September 2008. Sporozoite infections were detected by PCR in the head and thorax of female Anopheles mosquitoes. The annual sporozoite rate of mosquitoes was 0.11% (2 of 1,845 mosquitoes). The 2 mosquitoes that tested positive for sporozoites were An. sinensis. Malarial infections in anopheline mosquitoes from a population pool were also tried irrespective of the mosquito species. Nine of 2,331 pools of Anopheles mosquitoes were positive. From our study, it can be concluded that An. sinensis, which was the predominant vector species and confirmed as sporozoite-infected, plays an important role in malaria transmission in Ganghwa-do.

임금근로자의 산업재해에 대한 성인지적 분석 (The Gender Sensitive Analysis of Occupational Injuries and Illnesses of Employees)

  • 이경용;김영선;김기식;박종식;서동욱;김혜민
    • 한국안전학회지
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    • 제29권6호
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    • pp.158-165
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    • 2014
  • The statistics of occupational injuries and illnesses is one of the most important indicators of worker's safety and health in the field of occupational safety and health. The conventional statistics was produced without consideration of gender difference. This study was planned to investigate the difference of occupational injuries and illnesses by gender because that recently female workers was increased through the change of industrial structure such as from manufacturing dominated to service dominated structure. Statistics of occupational injuries and illnesses collected by workmen's compensation insurance system that have no information about gender composition of population. Economically active population survey was used to calculated the rate of occupational injuries and illnesses by gender. The distribution of estimated rate of occupational injuries and illnesses by industry, occupation and the type of accident were different between male and female employees, but those by the size of enterprise, age of the injured, the duration of the first recuperation, and job tenure were similar between male and female employees. This study has shown that gender sensitive approach may be applied to policy of occupational safety and health because that gender neutral perspective may not discover the fact of gender specific problems.

Effect of Additives and Fermentation Periods on Chemical Composition and In situ Digestion Kinetics of Mott Grass (Pennisetum purpureum) Silage

  • Nisa, Mahr-un;Touqir, N.A.;Sarwar, M.;Khan, M. Ajmal;Akhtar, Mumtaz
    • Asian-Australasian Journal of Animal Sciences
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    • 제18권6호
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    • pp.812-815
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    • 2005
  • This study was conducted to see the influence of additives and fermentation periods on Mott grass silage (MGS) characteristics, its chemical composition and to compare the digestion kinetics of Mott grass (MG) and MGS in Nili buffaloes. Mott grass chopped with a locally manufactured chopper was ensiled using two additives, cane molasses and crushed corn grains each at 2, 4 and 6% of forage DM for 30 and 40 days in laboratory silos. The pH, lactic acid concentration, dry matter (DM), crude protein and fiber fractions of MGS were not affected by the type or level of additive and fermentation periods. The non-significant pH lactic acid concentration, and chemical composition of MGS indicated that the both molasses and crushed corn were utilized at similar rate for the growth of lactic acid bacteria and production of organic acids. The MG ensiled with molasses at 2% of fodder DM for 30 days was screened out for in situ digestion kinetics in Nili buffaloes. Ruminal DM and neutral detergent fiber (NDF) degradabilities of MGS were significantly (p<0.05) higher than that of MG. The DM and NDF rate of degradation, lag time and extent of degradation was nonsignificant between MGS and MG. The higher ruminal degradation of DM and NDF of MGS than MG was probably a reflection of fermentation of MG during ensilation that improved its degradability by improving the availability of easily degradable structural polysaccharides to ruminal microbial population. The results in the present study have indicated that MG ensiled with either 2% molasses or 2% crushed corn for 30 days has better nutritive value for buffalo.

행위자 기반 모형을 활용한 농촌관광 사업 주민 참여 연구 - 계획된 행동 이론을 바탕으로 - (A Study on Residents' Participation in Rural Tourism Project Using an Agent-Based Model - Based on the Theory of Planned Behavior -)

  • 안승혁;윤순진
    • 농촌계획
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    • 제27권2호
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    • pp.77-89
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    • 2021
  • To predict the level of residents' participation in rural tourism project, we used agent-based model. The decision-making mechanism which calculates the utility related to attitude, subjective norm, perceived behavioral control of planned behavior theory was applied to the residents' decision to participate. As a result of the simulation over a period of 20 years, in the baseline scenario set similar to the general process of promoting rural projects, the proportion of indigenous people decreased and the participation rate decreased. In the scenarios with different learning frequencies in perceived behavioral control, overall participation rate decreased. Learning every five years had the effect of increasing the participation rate slightly. Participation rates increased significantly in the scenario that consider economic aspects and reputation in attitude and did not decline in the scenario where population composition was maintained. The virtuous cycle effect of subjective norm according to changes in participation rate due to influence of attitude and perceived behavioral control shows the dynamic relationship.

농촌(農村) 주민(住民)들의 의료필요도(醫療必要度)에 관(關)한 연구(硏究) (A Study Concerning Health Needs in Rural Korea)

  • 이성관;김두희;정종학;정극수;박상빈;최정헌;홍순호;라진훈
    • Journal of Preventive Medicine and Public Health
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    • 제7권1호
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    • pp.29-94
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    • 1974
  • Today most developed countries provide modern medical care for most of the population. The rural area is the more neglected area in the medical and health field. In public health, the philosophy is that medical care for in maintenance of health is a basic right of man; it should not be discriminated against racial, environmental or financial situations. The deficiency of the medical care system, cultural bias, economic development, and ignorance of the residents about health care brought about the shortage of medical personnel and facilities on the rural areas. Moreover, medical students and physicians have been taught less about rural health care than about urban health care. Medical care, therefore, is insufficient in terms of health care personnel/and facilities in rural areas. Under such a situation, there is growing concern about the health problems among the rural population. The findings presented in this report are useful measures of the major health problems and even more important, as a guide to planning for improved medical care systems. It is hoped that findings from this study will be useful to those responsible for improving the delivery of health service for the rural population. Objectives: -to determine the health status of the residents in the rural areas. -to assess the rural population's needs in terms of health and medical care. -to make recommendations concerning improvement in the delivery of health and medical care for the rural population. Procedures: For the sampling design, the ideal would be to sample according to the proportion of the composition age-groups. As the health problems would be different by group, the sample was divided into 10 different age-groups. If the sample were allocated by proportion of composition of each age group, some age groups would be too small to estimate the health problem. The sample size of each age-group population was 100 people/age-groups. Personal interviews were conducted by specially trained medical students. The interviews dealt at length with current health status, medical care problems, utilization of medical services, medical cost paid for medical care and attitudes toward health. In addition, more information was gained from the public health field, including environmental sanitation, maternal and child health, family planning, tuberculosis control, and dental health. The sample Sample size was one fourth of total population: 1,438 The aged 10-14 years showed the largest number of 254 and the aged under one year was the smallest number of 81. Participation in examination Examination sessions usually were held in the morning every Tuesday, Wenesday, and Thursday for 3 hours at each session at the Namchun Health station. In general, the rate of participation in medical examination was low especially in ages between 10-19 years old. The highest rate of participation among are groups was the under one year age-group by 100 percent. The lowest use rate as low as 3% of those in the age-groups 10-19 years who are attending junior and senior high school in Taegu city so the time was not convenient for them to recieve examinations. Among the over 20 years old group, the rate of participation of female was higher than that of males. The results are as follows: A. Publie health problems Population: The number of pre-school age group who required child health was 724, among them infants numbered 96. Number of eligible women aged 15-44 years was 1,279, and women with husband who need maternal health numbered 700. The age-group of 65 years or older was 201 needed more health care and 65 of them had disabilities. (Table 2). Environmental sanitation: Seventy-nine percent of the residents relied upon well water as a primary source of dringking water. Ninety-three percent of the drinking water supply was rated as unfited quality for drinking. More than 90% of latrines were unhygienic, in structure design and sanitation (Table 15). Maternal and child health: Maternal health Average number of pregnancies of eligible women was 4 times. There was almost no pre- and post-natal care. Pregnancy wastage Still births was 33 per 1,000 live births. Spontaneous abortion was 156 per 1,000 live births. Induced abortion was 137 per 1,000 live births. Delivery condition More than 90 percent of deliveries were conducted at home. Attendants at last delivery were laymen by 76% and delivery without attendants was 14%. The rate of non-sterilized scissors as an instrument used to cut the umbilical cord was as high as 54% and of sickles was 14%. The rate of difficult delivery counted for 3%. Maternal death rate estimates about 35 per 10,000 live births. Child health Consultation rate for child health was almost non existant. In general, vaccination rate of children was low; vaccination rates for children aged 0-5 years with BCG and small pox were 34 and 28 percent respectively. The rate of vaccination with DPT and Polio were 23 and 25% respectively but the rate of the complete three injections were as low as 5 and 3% respectively. The number of dead children was 280 per 1,000 living children. Infants death rate was 45 per 1,000 live births (Table 16), Family planning: Approval rate of married women for family planning was as high as 86%. The rate of experiences of contraception in the past was 51%. The current rate of contraception was 37%. Willingness to use contraception in the future was as high as 86% (Table 17). Tuberculosis control: Number of registration patients at the health center currently was 25. The number indicates one eighth of estimate number of tuberculosis in the area. Number of discharged cases in the past accounted for 79 which showed 50% of active cases when discharged time. Rate of complete treatment among reasons of discharge in the past as low as 28%. There needs to be a follow up observation of the discharged cases (Table 18). Dental problems: More than 50% of the total population have at least one or more dental problems. (Table 19) B. Medical care problems Incidence rate: 1. In one month Incidence rate of medical care problems during one month was 19.6 percent. Among these health problems which required rest at home were 11.8 percent. The estimated number of patients in the total population is 1,206. The health problems reported most frequently in interviews during one month are: GI trouble, respiratory disease, neuralgia, skin disease, and communicable disease-in that order, The rate of health problems by age groups was highest in the 1-4 age group and in the 60 years or over age group, the lowest rate was the 10-14 year age group. In general, 0-29 year age group except the 1-4 year age group was low incidence rate. After 30 years old the rate of health problems increases gradually with aging. Eighty-three percent of health problems that occured during one month were solved by primary medical care procedures. Seventeen percent of health problems needed secondary care. Days rested at home because of illness during one month were 0.7 days per interviewee and 8days per patient and it accounts for 2,161 days for the total productive population in the area. (Table 20) 2. In a year The incidence rate of medical care problems during a year was 74.8%, among them health problems which required rest at home was 37 percent. Estimated number of patients in the total population during a year was 4,600. The health problems that occured most frequently among the interviewees during a year were: Cold (30%), GI trouble (18), respiratory disease (11), anemia (10), diarrhea (10), neuralgia (10), parasite disease (9), ENT (7), skin (7), headache (7), trauma (4), communicable disease (3), and circulatory disease (3) -in that order. The rate of health problems by age groups was highest in the infants group, thereafter the rate decreased gradually until the age 15-19 year age group which showed the lowest, and then the rate increased gradually with aging. Eighty-seven percent of health problems during a year were solved by primary medical care. Thirteen percent of them needed secondary medical care procedures. Days rested at home because of illness during a year were 16 days per interviewee and 44 days per patient and it accounted for 57,335 days lost among productive age group in the area (Table 21). Among those given medical examination, the conditions observed most frequently were respiratory disease, GI trouble, parasite disease, neuralgia, skin disease, trauma, tuberculosis, anemia, chronic obstructive lung disease, eye disorders-in that order (Table 22). The main health problems required secondary medical care are as fellows: (previous page). Utilization of medical care (treatment) The rate of treatment by various medical facilities for all health problems during one month was 73 percent. The rate of receiving of medical care of those who have health problems which required rest at home was 52% while the rate of those who have health problems which did not required rest was 61 percent (Table 23). The rate of receiving of medical care for all health problems during a year was 67 percent. The rate of receiving of medical care of those who have health problems which required rest at home was 82 percent while the rate of those who have health problems which did not required rest was as low as 53 percent (Table 24). Types of medical facilitied used were as follows: Hospital and clinics: 32-35% Herb clinics: 9-10% Drugstore: 53-58% Hospitalization Rate of hospitalization was 1.7% and the estimate number of hospitalizations among the total population during a year will be 107 persons (Table 25). Medical cost: Average medical cost per person during one month and a year were 171 and 2,800 won respectively. Average medical cost per patient during one month and a year were 1,109 and 3,740 won respectively. Average cost per household during a year was 15,800 won (Table 26, 27). Solution measures for health and medical care problems in rural area: A. Health problems which could be solved by paramedical workers such as nurses, midwives and aid nurses etc. are as follows: 1. Improvement of environmental sanitation 2. MCH except medical care problems 3. Family planning except surgical intervention 4. Tuberculosis control except diagnosis and prescription 5. Dental care except operational intervention 6. Health education for residents for improvement of utilization of medical facilities and early diagnosis etc. B. Medical care problems 1. Eighty-five percent of health problems could be solved by primary care procedures by general practitioners. 2. Fifteen percent of health problems need secondary medical procedures by a specialist. C. Medical cost Concidering the economic situation in rural area the amount of 2,062 won per residents during a year will be burdensome, so financial assistance is needed gorvernment to solve health and medical care problems for rural people.

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난질과 유생발생을 이용한 4개 멍게(Halocynthia roretzi) 어미계군 특성 비교 (Differences in Egg Quality and Larval Development among Four Populations of Sea Squirt Halocynthia roretzi Adults)

  • 허영백;김은경;임영섭;전창영;조기채;명정인
    • 한국수산과학회지
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    • 제44권5호
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    • pp.516-523
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    • 2011
  • To compare four populations of sea squirt Halocynthia roretzi adults, their egg quality and larval development were investigated in the hatchery. The populations were: south sea wild (SSW), south sea cultured (SSC), east sea wild (ESW) and Iwate Japan cultured (IJC). Egg quality and larval development were compared using 13 factors (fertilization rate and diameter, proximate composition, amino acid and fatty acid contents of eggs, hatching rate and various sizes of tadpole larvae) which were obtained from each population. Fertilized egg diameter, hatching rate and size of tadpole larvae were significantly different among the four populations (P<0.05). Eggs were produced with higher crude protein ($5.20{\pm}0.00%$ SSW, $4.71{\pm}0.01%$ ESW, $4.66{\pm}0.01%$ SSC and $3.96{\pm}0.01%$ IJC) and lipid ($1.22{\pm}0.01%$ ESW, $1.01{\pm}0.00%$ SSW, $0.77{\pm}0.01%$ SSC and $0.69{\pm}0.00%$ IJC,) contents from domestic wild populations than from Japanese or cultured populations. Also amino acid and fatty acid contents were different. The extent of similarity between domestic and Japanese populations (30.5% IJC:SSW, 34.3% IJC:SSC and 40.7% IJC:ESW) was relatively low but was very high between SSW and SSC (73.9%). These results may have been due to differences in the abundance of food types and environmental conditions in the four localities and consequent differences in the diets of the sea squirts.